Bill accepting motor fuel dispensing apparatus

ABSTRACT

A fuel dispensing apparatus which is operable through a series of manual and automatic events, to deliver exactly one dollar&#39;&#39;s worth of fuel in response to the deposit of a valid $1 bill. The deposit initiates the testing of the validity of the bill, the posting of the credit and prevents a further deposit. Manual actuation of a locked approval means and of a control lever to &#39;&#39;&#39;&#39;on&#39;&#39;&#39;&#39; position resets the computing register, activates means to supply fuel to the nozzle and prevents further operation of the resetting means. Manual operation of the nozzle will start the flow of fuel. Delivery control means is driven in time with the cost register, reduces the flow rate when the credit approaches zero, and stops flow when it reaches zero. The control means then resets automatically to its initial position and the bill acceptor is conditioned to process another bill. If another bill is deposited, the acceptor is again disabled and another delivery can be made, without approval and control lever actuation, by merely opening the nozzle. Additional $1 deliveries can be made in the last described manner until the control lever has been returned to its initial position but thereafter, the approval and &#39;&#39;&#39;&#39;turn on&#39;&#39;&#39;&#39; acts must be repeated to secure delivery. A modified form enables a limited number of dollar bills to be deposited at the outset of a dispensing operation, instead of a single bill, and permits the predetermined amount of fuel to be dispensed without interruption.

United States Patent [191 Robbins Nov. 5, 1974 [5 BILL ACCEPTING MOTORFUEL DISPENSING APPARATUS [75] Inventor: Elmer A. Robbins, Fort Wayne,Ind. [73] Assignee: Tokheim Corporation, Fort Wayne,

Ind.

22 Filed: Feb.15, 1972 [21] Appl. No.: 226,406

Related US Application Data [63] Continuation-impart of Ser. No. 84,320,Oct. 27,

197 0, abandoned.

[52] US. Cl. 194/13, 222/2 [51] Int. Cl. G07f 13/02 [58 Field of Search'194/5, 13; 222/2 [56] References Cited UNITED STATES PATENTS 3,285,38111/1966 Robbins 194/5 3,357,531 12/1967 Romanowski 194/13 3,360,09412/1967 Romanowski ..'l94/l3 3,469,741 9/1969 Bickford.... 222/23,550,743 12/1970 Rothchild.... 194/13 3,570,644 3/1971 Booth 194/53,587,808 6/1971 Romanowski 194/13 Primary Examiner-Allen N. KnowlesAssistant Examiner-Thomas E. Kocovsky a series of manual and automaticevents, to deliver exactly one dollars worthof fuel in response to thedeposit of a valid $1 bill. The deposit initiates the testing of thevalidity of the bill, the posting of the credit and prevents a furtherdeposit. Manual actuation of a locked approval means and of a controllever to on position resets the computing register, activates means tosupply fuel to the nozzle and prevents further operation of theresetting means. Manual operation of the nozzle will start the flow offuel. Delivery control.

means is driven in time with the cost register, reduces the flow ratewhen the credit approaches zero, and stops flow when it reaches zero.The control means then resets automatically to its initial position andthe bill acceptor is conditioned to process another bill. If anotherbill is deposited, the acceptor is again disabled and another deliverycan be made, without approval and control lever actuation, by merelyopening the nozzle. Additional $1 deliveries can be made in the lastdescribed manner until the control lever has been returned to itsinitial position but thereafter, the approval and turn on acts must berepeated to secure delivery.

A modified form enables a limited number of dollar bills to be depositedat the outset of a dispensing operation, instead of a single bill, andpermits the predetermined amount of fuel to be dispensed withoutinterruption.

52 Claims, 20 Drawing Figures PATENTEDnnv 51974 3845848 sum 03 or .11

; FlGb IbS BY afman ATTORNEY.

PATENIEDNUV 51914 38 15348 sum 05 or 11 INVENTOR. EZMER A. ROBE/N5 ATTORNEY minimum 5 m sum 07 0F 11 QNN . mNN

EWFZDOU .5 r M /M4" Cw m2 2 m m m E Y 5.

Pmsmm 5 m4 3l845l848 sum 08 or 11 FIRM a H I Y 37 53 3395' 3486 "7B asenwas ms INVENTOR. Emma H. Remains Pmmmm m 3.8451848 sum near 11 vINVENTOR. Emma B. Roaaius This application is a continuation-in-part ofApplicants Ser. No. 84,320 now abandoned, filed Oct. 27, 1970, for BillAccepting Motor Fuel Dispensing Apparatus.

BACKGROUND OF INVENTION Various forms of money operated dispensingdevices appear in the prior art, most of which are coin operated. Inrecent years, the increase in fuel price, shortage of coins and otherfactors have virtually obsoleted such devices and have spurred thedevelopment of bill accepting and validating machines. Such devices arebasically electric and electro-mechanical in nature and are subject tothe rather stringent, explosion proof construction requirements ofUnderwriters Laboratories, Inc., when they are used in hazardous areas.At this time, it is impractical, if not impossible, to build a billacceptor which is explosion proof. The obvious alternative is to buildthe dispenser, in which the bill acceptor is to be used, so that thelatter can be located in an ordinary (non-hazardous) space, as suchspace is defined by U. L. regulations. One such space exists above theisland of the usual filling station. It extends upwardly from a levelwhich is 48 inches above the service floor, which is usually thedriveway of the station. The dispenser lighting equipment such as thefluorescent lamp tubes, ballast, starters, wiring, etc., have beeninstalled, for years, in this particular ordinary space to avoid thenecessity for and the cost of rendering them explosion proof, and thevalidator and its associated equipment, including the stop controlapparatus, are located in this space, in the dispenser described herein,for the same reasons.

Another problem related to money operated dispensers is that of securingaccurate termination of a prepaid delivery. Whereas, in the near past,delivery terminating within the final nickles worth was acceptable, thistolerance has been reduced to the last half cents worth. The problem hasbeen magnified by the fact that since the price per gallon of fuel hasincreased materially, the normal speed of operation of the cents decadehas increased materially, which in turn makes it more difficult tosecure an accurate stop of a delivery. A novel solution for this problemis disclosed herein.

Another problem is posed by the requirement by some fire preventionauthorities that no delivery may be made from a dispenser without thesupervision of a qualified attendant. The requirement has usually beenmet by providing a'key locked approval switch which has to be manuallyclosed, momentarily, by the attendant before the dispenser can be turnedon and used by a customer and the dispenser is again locked up as soonas the nozzle is returned to its support. Such a system is notparticularly objectionable in a dispenser which provides a creditmechanism capable of establishing credit to an amount which approximatesthe value of the fuel wanted by the customer. The mechanisms needed tostore varying and relatively large amounts of credit are relativelycomplex and expensive, as are bill acceptors for validating multipledenominations of bill. Marketing studies have indicated that the usualpurchase is one dollars worth, hence it is not logical to provide avariable credit bank or a multidenominational validator. However, it isnecessary to provide some means to enable a customer who wishes to fillup his tank, to do so with a minimum of delay. Accordingly, provision ismade to accept a series of one dollar bill deposits once the firsttransaction has been approved.

In view of the above information, it will be seen that one object of theinvention is to provide a dollar bill operated dispenser which has ahigh degree of flexibility of operation.

Another object of the invention is to provide such a dispenser at areasonable cost.

A further object is to provide a dispenser of the kind described whichwill deliver exactly a dollars worth of fuel upon the deposit of a validdollar bill.

Yet another object is to provide an apparatus which prevents an initialdelivery, upon establishment of a first credit, until a manual act ofapproval has been performed and until the registers have been reset tozero by another manual act. I

Yet another object is to provide an apparatus which will permitadditional deliveries to be made in response to additional billdeposits, without performing the acts of approval and resetting, so longas the dispenser has not been restored to its initial condition.

A further object is to provide a dispenser in which the resetting of theregisters and the initial delivery of fuel is prevented until the manualact of approval is performed, even though a credit has been established.

It is also an object to provide a dispenser which will prevent thedeposit of an additional bill as soon as previously inserted bill isaccepted, and which will permit another deposit only'after an existingcredit has been exhausted or cancelled.

Another object of the invention is to provide an apparatus which resetsthe stop control mechanism upon the exhaustion of credit or upon therestoration of the dispenser to its initial condition.

Still another object is to provide a stop control mechanism whichincludes a pulser, to terminate dispensing exactly as the prepaiddelivery is completed.

A further object is to provide means for resetting the pulser to itsinitial position each time the money regis-' ter is reset to zero.

Yet another object is to provide a dispenser which is settable so as tooperate upon the deposit of a bill or to operate in the normal manner,and in which means are provided to reset the stop control means to itsinitial condition each time the dispenser is turned off, when it isbeing used in the normal manner.

Another object is to provide a receptacle to receive all accepted bills,together with a register which is advanced by. one unit each' time acredit is established on the dispenser.

A further object of the invention is to provide a moditied form ofdispenser which comprises means for accepting a small number of $1 billsat the start of the dispensing cycle and means for'dispensing suchprepaid amount without automatic interruption'of the delivery exceptwhen the total amount has been delivered.

Another object of the modified form is to provide means for resettingthe stop control mechanism only when the manually operable start-stopmeans is moved to its stop position while any part of the prepaid amountremains undelivered.

Still another object is to prevent the depositing of more than apredetermined number of bills at the start of the dispensing cycle.

Yet another object of the invention is to prevent the deposit ofadditional bills after the delivery of a prepaid amount of fuel has beenstarted and until such delivery has been completed.

These and other objects will become apparent from a study of thisspecification and the drawings which are attached thereto, are made apart thereof and in which:

FIG. 1 is a perspective view of the dispenser showing the nozzlesupport, manual control lever, approval and selector switches, creditlamp and access door for the bill acceptor.

FIG. 2 is an elevation showing the interior of the dispenser and thearrangement of its components.

FIG. 2A is a view showing the pulser drive and zero adjusting means.

FIG. 3 is a diagram of the control valves and connecting fluid passages.

FIG. 4 is an elevation of the top portion of the dispenser viewed fromthe left of FIG. 2, with the door removed to show the stop controlmechanism.

FIG. 4A is a section of the stop mechanism differential and drives.

FIG. 5 is a plan view of the stop control mechanism.

FIG. 6 is an elevation, partly in section, of the acceptor, the cash boxand the passages there between for guiding an accepted bill.

FIG. 7 is a detail of the computer output drive to the differential.

FIG. 8 is an enlarged view of the top left corner of FIG. 2.

FIG. 8A is a plan view showing the tunnel, the stop mechanism and thelocations of various electric components.

FIGS. 9A and 9B constitute a schematic diagram of the system, circuitsand components.

FIG. 10 is a diagrammatic view of the switch actuating mechanism of thepower resetting mechanism in its normal condition.

FIG. 10A is a view similar to FIG. 10 showing, in full lines, theactuating mechanism conditioned for subsequently actuating the switchesand, in dashed lines, in switch actuated position.

FIG. 11 is an elevation showing the modified form of the stop controlmechanism.

FIG. 12 is a plan view of the mechanism of FIG. 11.

FIG. 13 is a diagrammatic view showing the modified power resettingmechanism for the registers and showing the parts thereof in a number ofkey positions which they occupy during the resetting cycle.

FIGS. 14 and 14A constitute the wiring diagram for the modifiedapparatus.

DESCRIPTION OF PREFERRED FORM Referring to FIGS. 1 and 2, numeral 1indicates a motor fuel dispenser which comprises a top housing 3 withinwhich are disposed a bill acceptor 211, a cash drawer 171, a stopcontrol mechanism 2 and various electrical parts and circuits which aredescribed in detail below. Since all of the electrical equipment in thisspace is more than 48 inches above the bottom of the dispenser base 5,it occupies an ordinary or nonhazardous space and is not subject toUnderwriters Laboratories requirements for explosion proof construction.Other components such as the pulser 77, the

solenoid valves 57,61, motor 11, etc., which are disposed at a lowerlevel, must be of explosion proof construction.

As seen in FIG. 2, base 5 has members 7 fixed to it, which support abox-like frame 9. The electric motor 11, a computing register 13, and apower reset mechanism 15 are mounted in this frame. The computer is ofthe type disclosed in Pat. no. 2,814,444 issued to Bliss on Nov. 26,1957, which comprises quantity and value registers 17 and 19respectively, which are resettable to zero by the uni-directionalrotation of a resetting shaft 299, through substantially one revolution.

The power resetting mechanism 15 is provided to produce such rotation ofthe resetting shaft and to perform other switch setting and controlfunctions, and is preferably of the type disclosed in Pat. No. 3,187,945issued to Wright et a]. on June 8, 1965. The structures of thismechanism which are essential to the understanding of the invention, areshown in FIGS. 10 and 10A hereof. Referring to said Figures, 69 is amanual start-stop lever which is in its vertical, FIG. 10 position whenthe dispenser is inoperative, and in a substantially horizontal position(FIG. 10A) during delivery.

Shaft 70 connects lever 69 to rotate cam 283 which, upon rotation to itsFIG. 10A position, closes normally open switch S1, which is in circuitwith normally closed switch S2,a and the resetting motor 253. This motordrives resetting shaft 299 and a cycle control cam 284 which is fixed to299. This cam actuates a follower lever 286 which rotates freely onshaft 288. The arm 287 of the follower is biased by spring 289 to holdthe follower in contact with its cam.

A switch actuating lever 291, also freely rotatable on shaft 288, isheld against a stop 292 by spring 293, and the free end of the lever hasa cam profile which is adapted to depress the actuator button ofswitches S2, 3 & 4 when the lever is rotated counterclockwise to itsactuated position.

An interponent 296 is pivotally mounted at one end on a pin 295 fixed inlever 291 while its other end is bifurcated. The upper branch or arm hasits lower end corner notched at 294 to receive an ear 290 formed on thefollower, and spring 298 biases the interponent clockwise to urge thenotch into engagement with the ear. The lower arm 297 projects into thepath of cam 283.

These parts occupy their FIG. 10 position when the dispenser is innormal inoperative condition and it should be noted that ear 290 is freeof the notch.

When lever 69 is rotated to its on position, cam 283 closes switch S1and also clears arm 297 of the interponent so that spring 298 will holdthe lower edge of the upper arm thereof in contact with the upper edgeof ear 290.

Subject to conditions described below, the closure of S1, with S2 in itsinitial position, energizes motor 253 which drives the resetting shaft299 through one revolution. During the first portion of such revolution,it actuates the clutch mechanism of the computer to disconnect theregister wheels from the count input and transfer mechanisms andconnects them to the resetting gear train of the computer.Simultaneously, the follower 286 descends the cam 284 to the full lineposition in FIG. 10A, in which the ear 290 clears the lower edge of theupper interponent arm and the latter drops to engage notch 294 and ear290.

During the next phase of rotation of 299, it is connected to drive thegear train of the computer so that any of the register wheels which arenot in their zero indicating positions will be driven to such positionsin upcounting direction. Further rotation of the shaft disconnects theshaft from the gear train and shifts the clutching mechanism to itsinitial position to reclutch the wheels to the count input means anddisconnect them from the resetting train. Thereafter, or simultaneouslytherewith, the follower 286 is rotated counterclockwise by cam 284 untilit reaches the dashed line position of FIG. A.v This rotation of thefollower is transmitted by the interponent, to the switch cam lever 291which, during the final portion of its motion, shifts the switches S2,3, & 4 from their a contacts (FIG. 9) to their b contacts. The openingof the switch S2,a interrupts the circuit of motor 253 to stop shaft 299in substantially its initial position, to complete the singlerevolution.

While the functions of the switches S2, 3, & 4 will be described indetail below, it should be noted that the closing of S2,b causes theoperation of flow supplying means such as the pump motor 11 and certainvalves so that liquid can be dispensed.

When dispensing is completed, lever 69 is returned to its initialposition. This restores cam 283 to its FIG. 10 position to reopen S1 andraises the arm 297, which in turn rotates the interponentcounterclockwise about its pivot 295, which disengages the notch 294from ear 290. Cam lever 291, being thus freed from the follower, will berotated by spring 293 to its initial position and permits switches S2,3, & 4 to return to their a contacts, to complete the cycle. It shouldbe noted that the switches S2, 3, & 4 cannot be returned to their bcontacts without repeating the above described cycle which results inresetting the registers to zero.

A shelf 21 is fixed to members 7, above and parallel to the base, andsupports a pump and air separator unit 23, 25, which isdriven by motor11 through belt 27. The pump inlet is connected by suction line 28 to atank (not shown) and pressurized fuel passes from the pump, through theseparator to meter 29. The measured fuel then flows to the controlvalves, indicated generally by 31, through hose 33 to the manuallyoperated valve 35 in the nozzle 37.

As shown in FIG. 3 the meter discharge pipe communicates with a chamber41 of the main valve body 43. The discharge chamber 45 of the bodycommunicates with chamber 41 through a port 47 which is controlled by apoppet valve 49 attached to a piston 51 which works in a cylinder 53. Asmall, fixed orifice 55 bypasses the piston. Chamber 45 discharges intothe hose. A light spring 46 in the cylinder acts on the piston to urgeit and valve 49 in the valve closing direction.

A normally closed pilot valve 57 is connected to a solenoid 59 whichopens it upon energization. The inlet of 57 communicates with cylinder53 above the piston and its outlet is connected with chamber 45. Thuswhen the pilot valve is closed, the opposing fluid pressures acting'onthe piston are balanced through the orifice, so that the main valvewillbe closed by the spring. When the pilot valve is open, and the nozzlevalve is also open, liquid will be bledfrom the cylinder more rapidlythan it can be replaced through the orifice. A differential pressurewill thus be applied to the piston in the va'lve opening direction,which will'overcome the spring and cause the piston to open the mainvalve.

Since the magnitude of the pressure differential will increase anddecrease with the magnitude of the flow through the nozzle valve, themain valve will follow or modulate the flow to the nozzle in accordancewith the setting of the nozzle valve.

A normally closed slow flow valve 61 is connected to be opened byanother solenoid 63, when the latter is energized. This valve isconnected directly between the chambers 41 and 45 so as to bypass themain valve. When open, it permits flow to the hose at a rate of about 4to 5 GPM. This valve is closed to terminate the prepaid deliveries, aswill be described below, and contributes much to the accuracy of thedelivery.

A nozzle support 65 and boot 67 are mounted on the frame adjacent themanually operable control lever 69. The lever is mounted on a shaft 70of the power reset which can be rotated about 90. The lever occupies avertical, depending position (full lines FIG. 1) when the dispenser isin its initial or off condition and is rotated counterclockwise to itsdashed line position to cause the dispenser cycle to start, when it isset for normal operation, and to condition it for starting when it isoperated under the control of the bill acceptor. When the lever is inits rotated or horizontal position, it overlies the nozzle support so asto prevent the nozzle from being mounted thereon and it must be rotatedclockwise far enough to stop dispensing and to insure the institution ofanother resetting cycle, before it is sufficiently clear of the nozzlesupport to permit the nozzle to be hung thereon.

A door 71 is hinged by 73, along itstop edge, on the end wall 179 ofhousing 3 (FIG. 6), so as to close the openings 221 therein, throughwhich a bill may be inserted in and returned from the bill acceptor 211.e As shown in FIG. 2, a shaft connects the meter to drive the computer13 and thereby, its gallons and cost registers 17, 19, in accordancewith the amount of fuel delivered. The gallons delivered arecontinuously multiplied by the price per gallon, so that the costregister shows the exact value of the fuel delivered at any stage of thedelivery.

As shown in FIGS. 2 and 2A, a pulse initiating mechanism 77, usuallyreferred to as a pulser, is suitably mounted on a side frame 13A of thecomputer 13. The

penny wheel 6 of register 19 carries a gear 4 fixed to it, which mesheswith a gear 4A, of the samesize, and which rotates freely on the shaft8A of the pulser. A lug 20 extends axially from the outer face of gear4A, par

allel to shaft 8A but eccentric to it, so as to cross the path of alever 20A which has its hub pinned to. the shaft. The lever ispreferably disposed tangentially with respect to the shaft. A screw 18is adjustably mounted in the lug so as to extend substantially normal tothe lever for abutting engagement therewith. Thus as the wheel 6 rotatesin a count increasing direction, gear 4 will rotate clockwise (viewedfrom the left of FIG. 2A), gear 4A will rotate oppositely, so that lug20 and screw 18 will drive lever 20A and shaft 8A in a counterclockwisedirection.

Shaft 8A carries gear 4B which meshes with gear 4C I and drives it inthe ratio of 5 to 1. Gear 4C is fixed to shaft 8, which also carries atwo pole magnet 10 fixed to it. A reed switch S13 is mounted on thepulser casing so that the magnet poles will alternately pass thearmature 12 of the switch, and since the switch is normally open, itwill be closed and opened once in response to the passage of each pole.Due to the. ratio of gears 48 and 4C, movement of the penny wheelthrough 36, which is an advance of 1 cent of the count, produces a 180rotation of the magnet and therefore one complete cycle of the switch.

When the pulser is initially installed on the dispenser, the gears 4 and4A are brought into mesh with a pole in position to hold the switch justclosed and with the zero indicators 26, 26A in alignment. Thereafter,during dispensing, the one pole will pass the armature so that theswitch will open, as the count moves toward the first of 1 cent, and thesecond pole will close the switch when the indicators 26, 26A fornumeral 1 coincide. If the desired closing of the switch is notobtained, the time of closing can be advanced or retarded by moving thescrew 18 into or out of the lug 20, as will be described below. Thus itis seen that the switch will be closed once for every cents worth ofliquid dispensed, exactly when the dispensing thereof is completed.

In the computing register disclosed, the indicating wheels or dials arereset in the same direction as that in which they are driven duringcounting. Thus if the penny wheel is at zero when the registers arereset, it will not be moved during a reset cycle. However, if it is notat zero, it will be moved far enough to move it to zero. The magnet willalso be moved in the latter case, so that it occupies its initialposition, and every full dispensing cycle will be started with themagnet occupying its proper position.

A shaft 79 (FIG. 2 8L 7) extends from the computer and forms a part ofthe drive train for the stop control mechanism. It is driven in timewith the cents wheel and pulser during delivery, but is not resettherewith because it is driven by the money output of the computerrather than by the cents wheel.

Shaft 79 is coupled at 80 to the input shaft 89 of a bevel gear set 81which comprises a bearing bracket 85, mounted on the dispenser frame bybracket 101. Shaft 89 has bearing in the depending arm 87 of bracket 85and drives gear 91 which meshes with gear 99 fixed to output shaft 95,which bears in arm 93 of bracket 85. Differential drive shaft 83 isdriven by shaft 95 through coupling 97.

Referring to FIGS. 4 & 4A, shaft 83 extends upwardly into housing 3 andis coupled at 105 to an extension shaft 102 which rotates in suitablebearings in brackets 107 and 109 which are fixedly mounted on thedispenser top plate 165 and the top of the cash drawer tunnel 167respectively. A gear 111, fixed to 102 near its upper end, but belowbracket 109, meshes with the input gear 113 of a differential unit 116(FIG. 5). Gear 113 is connected by a hollow shaft 118, which rotates ina bearing in the differential case 128, to the sun gear 114. The othersun gear 127 is fixed to shaft 115 which extends upwardly through gears114, 113 and their shaft 118, and through a bearing in bracket 109, toterminate in a stepped hub 119 which is fixed to it. A control disc 117is fixed to the lowest step of the hub.

An electric motor 121 is mounted on and below bracket 107 and its outputshaft extends upwardly therethrough and has gear 125 fixed to it, tomesh with gear 129, which is fixed to the differential casing 128,concentric with, but free of shaft 115.

One of more planetary pinions 131 are rotatably mounted on shafts 132,which are fixed in the differential case 128, parallel to andeccentrically of shaft 115. These pinions mesh with both sun gears. Thuswhen shaft 102 is driven and the motor is stationary, gears 111, 113 andshaft 118 will drive sun 114, which in turn rotates pinions 131 to drivesun 127, shaft and disc 117 clockwise as viewed in FIG. 5. When shaft102 is stopped and motor 121 runs, gears 125, 129 rotate the case 128.The pinion shafts orbit about stopped sun 114 and drive sun 127, alongwith shaft 115 and disc 117, in the same clockwise direction.

A pair of radially extending, delivery stop cams 135, 137 are rotatablymounted on the second step 133 of hub 119 (FIG. 4 & 5). Cam 135 liesabove, but in contact with 137 and each is provided with an arcuateslot, 139, 141 respectively, near their outer ends and centered on theaxis of the hub. A spacer 143 is disposed between cam 137 and the disc,and a screw 145 is passed through both slots and the spacer and enters atapped hole 147 in the disc. The outer ends of the cams project beyondthe periphery of the disc and are adapted to actuate a roller 149 whichis mounted on the actuating lever 151 of a normally open stop switch153. The parts are shown in their initial positions in FIGS. 5 & 9B,although in FIG. 9B the cams and disc are viewed from the bottom of FIG.4 rather than from the top as in FIG. 5. It should be noted that thecams will have to be rotated the better part of a revolution before thecam 135 will engage the switch actuator roller 149.

The screw 145, when loosened, permits the cam 135 to be adjusted so asto advance or retard the time of switch closure while cam 137 may besimilarly adjusted to change the time of reopening the switch. Thescrew, when tightened, will preserve the adjustment.

A flow control cam 148 is carried by an arm 152 rotatably mounted onstep 133, above and in contact with cam 135. The cam 148 projects beyondthe periphery of the disc from the upwardly bent end of 152 whichposition is at a higher level than that of cam 135 so that it cannotactuate switch 153. The roller 161 of a normally closed switch 163 ismounted in the path of cam 148 and out of the path of cam 135. The arm152 is also slotted at 154 toreceive screw 155 which also passes througha spacer 157 and into a tapped hole in the disc.

It should bev noted that the leading edge of cam 148 is advancedfurther, with respect to its switch roller 161 than cam 135 is withrespect to its roller 149, so that switch 163 will be actuated before153, as the disc 117 rotates (FIG. 5). Briefly stated, the opening ofswitch 163 deenergizes pilot valve solenoid 59 to close valves 57 and49, leaving valve 61 open to deliver liquid at a slow rate. Thereafterswitch 153 closes preparatory to transmitting the pulse from pulser 77when it occurs, to means which will cause the closure of valve 61 toterminate the flow and perform other functions described below. Both ofthe switches are mounted on the bracket 109.

As seen in FIG. 7, the dispenser top plate 165 which serves as abaseplate for mounting the mechanisms which are located under the cover3, is fastened to the domeplate 103 of the dispenser at various pointsby spacer fasteners 166. Also, as seen in FIGS. 4, 8A, and 8 the tunnel167 is of sheet metal and has flanges 169 bent outwardly to lie flat onthe baseplate 165 to which they are spotwelded, to complete the tunnelto receive the cash drawer 171.

The cover 3 comprises a top wall (FIG. 4) having downwardly divergingside walls 173 and one end wall 179 (FIGS. 1 & 6) which defines the billguide 217 receiving openings 221. The opposite end 193 of the cover(FIGS. 2 & 4) is open. A number of angle pieces 183 removably connectthe cover to the plate 165 by means of bolts or other suitablefastenings 184.

A bracket 189 is mounted on the tunnel member and supports a panel 181,above and extending transversely of the tunnel member. The panelsupports relays K1 through K5, a calibration switch S11, a 24 voltcircuit breaker 242, 24 volt test points TF1 and'TPZ which are connectedto the opposite ends of the 24 volt secondary coil of transformer 237, a1 volt circuit breaker 241 and 115 volt test points TF3 and TP4, whichlead to the neutral line 106 adjacent the coil of relay K6 (FIG. 9) andto the hot main 110 adjacent the breaker 241. These components will bedescribed further in connection with the circuitry.

The end 193 of the housing 3, (FIGS. 4, 8, & 8A) is provided with aremovable door 195 which is recessed in the end of the housing. Thepanel 181, the end of the tunnel and that of the cash box are exposedupon opening and removal of the door. Axially aligned, horizontal hingepins 197 are fixed to the inner side of the door so as to be offsetinwardly from the inward side of the members 199 fixed to the upper sideof plate 165. A

key lock 201 is mounted on the door and has a bolt 203 Y which is movedinto and out of engagement with a stop 204 fixed to the housing, to lockthe door in place. The door has an inwardly extending tapped boss 205cast on its inner face, which projects horizontally toward the end ofthe cash box 171. A screw 207, provided with a nut 209, is screwed intothe boss and is adjusted so that the head of the screw presses on theend of the box, when the door is closed, so as to hold the box in properengagement with the bill acceptor 211 which is disposed at the oppositeend of the box (FIG. 6).

As shown in FIG. 6, the acceptor has a bill discharge opening 213disposed to align with a bill receiving opening 215 in the adjacent endof the cash box, to insure that all accepted bills are deposited in thebox.

The acceptor-validator mechanism may be any one of a number which areavailable on the open market. It is preferred to use the device made byNational Rejectors, Inc., Model 34-03-001.

This machine has a slotted bill insert guide 217 and a slotted billreturn guide 219 disposed at the end opposite to that facing the cashbox, so that the guides lie within the aperatures 221 formed in the end179 of the switch 229 is mounted on the end 179 of housing 3, ad-

jacent the door 71.This switch may be set to either one of two positionsby means of a key which may be withdrawn after such setting. In oneposition, theswitch establishes circuitry which enables the dispenser tobe operated in the normal manner, by removing the nozzle from support 65and turning the manual control lever to its on position. In the otherposition of the switch, no

delivery can be made until a bill has been inserted, 7

tested and found to be acceptable.

A second key operated switch 231, referred to as the Approval Switch, ismounted above and in like manner to switch 229. This switch is adaptedto be operated by turning the key in the lock to close the switch, whichreturns to its open condition when the key is returned to its initialposition and is withdrawn from the lock. This switch must be used topre-condition the dispenser for operation in response to the deposit ofa bill. It performs no function when the dispenser is being operated inthe normal mode.

The station attendant retains possession of both of the keys.

The approval switch is used primarily to compel the attendant to bepresent at the dispenser before the starting of the dispenser so as toascertain whether the potential customer who has shown his intention ofusing the dispenser is actually capable of serving his'vehicle in a safemanner. In some jurisdictions, the authorities do not require suchapproval and in such cases the switch and its corresponding circuitrymay be omitted, as will be discussed below.

A signal lamp 233 is also mounted on the end 179 of the housing 3, abovethe approval switch, which lights when a bill has been insertedandaccepted to show that a credit exists on the machine. It isextinguished when such credit is exhausted by delivery of the prepaidamount of fuel or upon resetting of the stop mechanism, with a creditstill posted, in response to the return of the manual control lever 69to its initial position, which cancels any remaining credit.

Various other components are mounted within the housing 3, either on thebase plate 165 or on various brackets. As shown in FIG. 8A, a terminalstrip 235 is mounted on the plate; a VAC transformer 237 is mounted onthe tunnel along with the previously mentioned relays, and on the leg181 of bracket 189, a socket 239 is mounted to receive the plug whichcarries current to the bill acceptor 211. The pump motor relay K6 isalso mounted on the tunnel beside the transformer. With this descriptionof the basic components of the system, reference is made to FIGS. 9A and9B which disclose the circuitry provided to connect the components so asto accomplish the necessary functions. WIRING DIAGRAM (FIGS. 9A and 9B)The electrical system is shown in its initial condition in FIGS. 9A and9B. Selector switch 229 is set for operation of the system in theprepaid delivery mode, the system is energized and the bill acceptor 211is running so that a bill can be deposited, but no credit has beenestablished.

The dispenser is in its initial, inoperative condition with the controllever 69 in its vertical off position and the nozzle is on its support.Valves 49, 57, and 61 are closed and pump motor 11 is deenergized. Theregisters 17 and 19 show the gallonage and cost of the previous sale.Disc 117 of the stop mechanism has been reset to its starting positionso that the cams 135, 137, and 148 are in the positions shown in FIGS. 5and 9B.

Power is supplied to the system from a 115 VAC main although, ifdesired, 230 VAC may be used for some circuits, such as that for thepump motor, if 230 VAC components are provided in such circuits. Asecond voltage 24 VAC is also provided for use in some circuits. The hot115 VAC line is designated by numerals 110 and 110A throughout thediagram while the corresponding neutral has two braches 106 and 108. Inthe 24 VAC system, the hot line is designated by numeral 24 while theground lines are indicated generally by numeral 22, with suffices suchas A, B, C, etc., identifying branches thereof. In a 230 volt pump motorcircuit, line 108 will be connected to another hot main instead of toneutral.

The 24 volt supply is provided by the transformer 237 which has itsprimary coil connected at one end to line 110 which contains a circuitbreaker 241, and at its other end directly with neutral branch 106. Itssecondary is connected to lines 24 and 22 as already indicated.

BlLL DEPOSIT & ACCEPTANCE When a $1 bill has been deposited in theacceptor and has been tested and found to be valid, the machine closesits switch 243 momentarily and reopens it, to close:

CIRCUIT A from 24V ground 22 through pins A of validator socket 239,switch 243, pins B, vend line 245, branch 245A, coil of relay K1 to 24Vmain 24.

CIRCUIT B in parallel with Circuit A, from line 245 through 2458, thecoil of pulse actuated credit register 247 to main 24.

CIRCUIT C (Also parallel) from 245 through 245C, credit lamp 233 to 24.Since the above circuits would be reopened by the reopening of the billvalidating switch 243, the normally open contacts A,b of relay K1 whichwere closed upon its energization, are used to establish a substituteground.

CIRCUIT A1 from line 245 at 245A, through 245D, K1 contacts A,b), line249, normally closed contacts A,a of relay K5, branch ground 22A to 22.Thus Circuits A, B, & C will be held energized.

The motor 212 which drives the bill acceptor is normally held energizedby CIRCUIT D from ground 22, through 267, pins C, motor 212, pins D,line 255A which includes the normally closed parallel contacts 261 ofrelay K2, line 255, contacts a, S7 of the selector switch 229 to line24. This circuit is broken, to stop motor 212 so as to prevent thedeposit of another bill, upon the energization of relay K1, the normallyopen contacts 3,1: of which are now closed to establish CIRCUIT E frommain 24 through selector switch contacts S7, 21), lines 255, 2558, K1contacts B,b, line, 257, 257A, coil of relay K2 to ground at 22B. Thisrelay opens switch 261 to de-energize Circuit D and motor 212.

The energization of relay Kl also energizes one leg of a circuit whichwill be extended byadditional means to cause the operation of theregister resetting motor 253. This leg is defined as CIRCUIT F1 fromline 110 through line 110A at K], its contacts D,b, line 251, connectors12 of terminal strip 235, normally closed contacts S2,a of the powerreset mechanism, to the normally open switch S1, thereof which will beclosed when the manual control lever 69 of the dispenser is rotated fromits vertical off position to its horizontal on position (FIG. 1). Itwill thus be seen that operation of this lever to its on positionwithout the establishment of a credit, will produce no results becauseCircuit F l is not energized. Assuming that F 1 has been energized, theclosure of S1 by operating lever 69 will not start the resetting motor253 but merely applies power to the second leg,

CIRCUIT F2 from now closed switch S1 through motor 253, line 251A to thenormally open contacts A,b, of relay K3, which is the approval relay andwhich must be energized by closure of the approval switch 231, thecontacts of which are normally open. This closure is momentarilyeffected by the authorized attendant by means of his key. Such closureenergizes CIRCUIT G from 24V ground 22B through the coil of K3, line2578 which includes the approval switch contacts normally closedcontacts a,B, of relay K4, to line 257 which is supplied from main 24through S7,a, lines 255, 255B and contacts B,b of K1. The energizationof K3 closes its contacts D,b to close a parallel CIRCUIT H around theapproval switch to hold relay K3 energized after switch 231 is opened.K3 when energized also closes its contacts A,b to complete CIRCUIT Fwhich includes circuits F1 and F2 and the final leg through K3 contactsA,b to the 115 VAC neutral 106.

It should be noted that the manual operations of the approval switch,the manual lever 69 and the insertion of a bill may be performed in anyorder, but that no action of the power resetting mechanism will occuruntil the entire Circuit F is completed. Further, until the resettingmechanism has been operated through its cycle, there can be no deliveryof fuel since with S2 in its a position the valves remain closed andmotor 11 remains unenergized.

Assuming that the delivery has been approved and a credit has beenestablished and that the lever is now moved to its on position, suchaction will start the resetting motor 253 which will reset the registers17 and 19 to zero and will also reset the pulsing switch to its initialposition, if such action is necessary. As the resetting is completed,the motor reconnects the registers to be driven by the meter and opensswitches S2,a and S4,a as it closes S2,b, S3,b. Opening S2,a opensCircuit F to stop motor 253 while the opening of S4,a opens a circuitleg P1 which supplies power for a calibrating function which isdescribed below.

The closing of switch S2,b switches the power which is being suppliedthrough the Circuit leg F1 into CIRCUIT I which extends from the switchthrough line 263 to the coil of the pump motor relay K6, which isconnected to neutral line 106. The energization of K6 moves its A and Bcontacts to engage their respective b contacts so as to energizeCIRCUITJ from Main through contacts A,b, line 256, pump motor 11, line256A, contacts 8,1; to neutral 108. The pump motor is thus started.Switch S2,b also energizes a branch 263A from line 263, which is a partof CIRCUIT K from said switch through 263, 263A, the solenoid 63 of theslow flow valve 61, and line 269 to 106. The valve is thereby opened.Switch S2,b also energizes another branch 263B from line 263 which isCIRCUIT L which extends from the switch and line 263 through line 263B,which includes selector switch S8,a, and the normally closed switch 163of the control mechanism 2, and continues on through line 263C to thesolenoid 59 of the pilot valve 57 and terminates in neutral 106. Thepilot valve is thus opened and the main valve 49 will open as soon asthe nozzle valve is opened by the customer to supply his vehicle tank.

13 The above described closing of switch S3,b by the resetting motor 253establishes a I CIRCUIT M from main 24 through selector switch contactsS7,a, lines 255, 2558, Bb contacts of K1, lines 257, 257C, resettingmechanism contacts S3,b, line 257D, the coil of relay K4 to ground 223.The energization of K4 closes its contacts AJ) and D,b and opens B,a.The closing of contacts A,b establishes a holding CIRCUIT N from ground22B through the coil of K4, K4-b,A line 258, the normallly closedcontacts B,a of relay K5 to main 24.

The opening of the K4, B,a contacts breaks the holding Circuit G for theapproval relay K3 which drops out to break its holding Circuit H as wellas the last leg of Circuit F, so that the reset motor 253 cannot berestarted by manipulating control lever 69 to close switch S1. Once thelever is returned to its initial position, the entire starting cycle ofevents must be carried out to secure another delivery, so long as theselector switch remains in the prepaid delivery mode position.

The closure of K4 contacts D,b extends a circuit leg for the reset motor121 for subsequent operation as described below.

DELIVERY OF FUEL & CREDIT COUNTDOWN With the system conditioned asdescribed above, motor 11 is operating, valves 57, 61 are open,registers 17 and 19 are zeroized and the pulser and the controlmechanism cams 135, 137, and 148 are in their starting positions, sothat opening of the nozzle valve will start delivery and valve 49 willopen to a degree corresponding to the nozzle valve setting.

At the end of the delivery of every pennys worth of fuel, the pulsingswitch S13 will close to initiate a pulse, but such pulse will not beeffective because the pulsing circuit is held open by the normally openstop switch 153, which is actuated by cams 135, 137. The amount of fueldelivered and the cost thereof is accumulated on the registers 17, 19.

The control cam 148 is set so that is will open switch 163 when about 93cents worth of fuel has been dispensed. The timing of this event is notcritical and can be varied by loosening screw 155 and adjusting the cam148. This event must occur far enough in advance of the closing ofswitch 153 to insure that only the slow flow valve is open when switch153 closes.

The opening of switch 163 breaks Circuit L of the pilot valve solenoid59 so that the pilot valve 57 closes and in turn causes the main valve49 to close, regardless of the nozzle setting. Flow continues slowlythrough valve 61.

During, but before the end of the delivery of the last pennys worth offuel, the stop cam 135 closes switch 153, which closes the ground leg ofthe pulsing CIRCUIT P which extends from main 24 at the selectorcontacts S7,a through lines 255, 281, terminal 14 of strip 235, to oneside of the as yet open pulsing switch S13, and from its other sidethrough line 281A, to switch 153, then through line 281B and the coil ofrelay K5 to ground 22B.

When the pulsing switch S13 is closed by the pulsing mechanism 77, itenergizes Circuit P so that relay K5 is operated to open its a contactsand close the D,b contacts.

The opening of its A,a contacts breaks the substitute groundCircuit A1todeenergize relay K1. The opening of the K1-D,b contacts breaks Circuitleg F1 thereby cutting off the supply of power to Circuit K of the slowflow valve which closes and terminates the flow of fuel. The sameinterruption deenergizes Circuit I to the relay K6 which opens Circuit Jof the motor 11 so that the pump stops. Circuit L to the pilot valve issimilarly interrupted although it has already been interrupted by switch163.

The opening of K1 contacts B,b breaks Circuit E through the coil of K2to allow its switch 261 to reclose Circuit D and restart the billacceptor motor 212.

The energization of K5 opened its contacts B,a in the holding Circuit Nfor relay K4, so that it has also dropped out. K5 also closed itscontacts D,b to line 285 and since K1 has closed its contacts D,a as itdropped out, a

CIRCUIT Q is established from main A, through Kl-D,b, 285, K5-D,b, line271B and motor 121 to neutral 106.

This motor starts and drives the differential mechanism 116 so as torotate the disc 117 and its cam in the same direction as they weredriven during countdown. The disc will rotate only as far as is requiredto allow the roller 149 of switch 153 to ride off of cam 137 and permitthe switch to open, thereby breaking Circuit P and the bill acceptor isoperating, the customer now has the choice of inserting another bill orof terminating the transaction by returning the control lever to its offposition and hanging up the nozzle.

Assuming that another $1 bill is deposited and accepted, the vend switch243 will be momentarily closed to energize Circuit A and relay K1, whichshifts its movable contacts A, D & B to their respective b contacts.Closing of the A,b contacts reestablishes the substitute ground CircuitA1 to hold K1 energized. The counter Circuit B and credit lamp Circuit Care ener gized and held simultaneously with Circuits A and A1. Circuit Badvances the counter 247 by one digit, which represents the accepted $1bill.

The closing of the K1-B,b contacts again energizes Circuit E to pull inK2 which opens switch 261 and stops the bill acceptor motor 212, so thatno further deposits can be made. The same K1 contacts extend power tothe approval switch contacts via Circuit G but the operation of thisswitch is not needed because the control lever 69 was not returned toits off position, so that the power reset switches S2, S3, & S4 remainclosed on their b contacts. Thus the closure of Kl-D,b contacts willreenergize Circuit F1 to supply power directly to switch S2,!) andthrough it to Circuits I, K & L. The motor relay K6 is energized byCircuit I and closes its contacts to energize the Circuit J and therebystarts the pump motor 11. Circuit K reopens the slow flow valve byenergizing its solenoid 63 and since cam switch 163 is closed, Circuit Lenergizes solenoid 59 to open the pilot valve 57. Thus the dispensing ofthe sec ond dollars worth of fuel may proceed upon opening of the nozzlevalve.

. It should also be noted that the closure of K1-B,b has also closedCircuit M to energize relay K4, which, in turn, by shifting its A & Dcontacts to their respective b positions, has closed Circuit N to holdK4, has reopened the approval switch Circuit G and has conditioned asecond power supply line for the cam reset motor, Circuit Q1, which willbe described below.

Accordingly, upon opening of the nozzle valve, the main valve 49 willopen and the delivery will continue as described above, with thecounters 17 and 19 continuing to accumulate the fuel dispensed, the onlydifference being that, since they have not been reset, they will showthe instantaneous totals of both the previous and the current delivery.

Assuming that the delivery continues to completion, the flow will beterminated in the same manner as in the previously described deliveryand the system will be in the same condition as it was at the start ofthe delivery which has just been described, and the customer is providedwith the same options as before.

If it is assumed that he elects to deposit another $1 bill but that thevehicle tank cannot accept the amount of fuel to be delivered, thesystem is again activated by the pulse from the bill acceptor and therelays and circuits will be established in the same way as described inconnection with the second deposit, so that dispensing will occur inresponse to the opening of the nozzle valve. The registers 17 and 19will operate to show the instantaneous total of the three deliveries,since they have not been zeroized.

Since the nozzle 37 is provided with an automatic shutoff mechanism ofthe usual kind, the valve 35 will close as soon as the fuel level in thetank rises sufficiently to immerse the nozzle tip. By withdrawing thenozzle somewhat from the tank and operating the nozzle valve, the tankcan be filled full, but since the full amount of fuel cannot bedelivered, the customer merely turns the control lever off and hangs upthe nozzle. Since the delivery was not terminated by the stop cams 135,137 and 148 and their switches 153 and 163, relay K4 was not energizedand all of the relays as well as valve solenoids 59, 63 and motor 11remain energized so long as lever 69 remains in its on position.However, upon the return of the lever to its off position, the switchesS1 through S4 of the resetting mechanism are returned to their initialpositions with the a contacts closed and cannot thereafter move out ofsuch positions until the resetting motor 253 isagain energized to resetthe registers.

Switches S1 and S2,b are opened and with the latter open, Circuits I, K& L are opened to drop relay K6 which opens pump motor Circuit J; todeenergize solenoid 63 which allows the slow flow valve to close and todeenergize the solenoid 59 to allow the pilot valve to close, if it wasopen.

Since K5 is not energized, the cam resetting motor 121 cannot beenergized in the previously described manner by Circuit Q becausecontacts Kl-D,a and K5- D,b are open. However, the dropping of relay K6closes a CIRCUIT Q1 from main 110 through K6 contacts A,a, line 27], K4contacts b,D (which are held closed because K4 is energized), line 271A,KS-a, D contacts, line 2718 and cam reset motor 121 to neutral 106. Thedisc 117 is thus rotated in the same direction as before but since thepulse switch S13 may be open, the previous source of power for CircuitP, which is needed to stop 12], is not reliable and a new one must beprovided. The original source was from selector S7,a and lines 255, 281,through pulse switch S13, 281A to terminal 9 of 235, and the rest ofCircuit P, to energize K5. The new source CIRCUIT P1 extends from the 24volt main 24, through reset mechanism contacts S4,a, which were closedby lever 69 upon return to off position, and line 281C and said terminal9, to lines 281A switch 153, 281B and the rest of Circuit P.

So long as cam switch 153 remains open, the motor 121 remains energizedthrough Circuit 01. However, when cam closes 153, K5 is immediatelyenergized through Circuits P1 and P, and causes the relays K1, K2 and K4to be dropped, K3 and K6, having been previously dropped, do not change.

The energization of K5 closes contacts D,b while dropping of K1 closesits contact D,a, thereby breaking Circuit 01 and establishing Circuit Qthrough line 285, so that the motor 121 continues to run. When theroller 149 drops from cam 137, switch 153 reopens, to break Circuit Pand drop K5. Contacts D,b open to break Circuit Q thus stopping motor121 and even though the K5 contacts D,a of Circuit Q1 are remade, thiscircuit is no longer effective because the dropping of K4 has opened thecontacts D,b which are in said circuit.

With the dropping of K2, the bill acceptor motor is reenergized so thatanother bill may be deposited. While the pulsing switch S13 may not bein its initial position at this time, its zeroizing is insured by thefact that the full cycle of credit posting, approving and registerresetting must be carried out before the next delivery can be made andthe resetting of this switch occurs during the register resetting eventof the new cycle.

()nly one other potential way of operating the system in the prepaidmode remains to be explored. Upon termination of a delivery byexhaustion of the established credit, all of the relays K1 through K6have been dropped. The customer turns the control lever 69 to itsinitial position and hangs up the nozzle. This action opens the switchS1, closes 82,0 and S4,a and opens S2,b and 53,11. The bill acceptor isoperating, the cams have been reset to their initial positions, thecredit lamp has been extinguished and no other functions remain to beperformed to complete the cycle.

As previously noted, the mere operation of lever 69 to its on position,once it has been turned off, produces no notable effect. It would closeswitch S1, but since all of the relays are out and Circuit F is open,there will be no resetting of the registers or any other action of thevarious mechanisms.

The customer could fail to return the lever 69 to its off position andleave the motor running after and incomplete delivery, but in this casehe could not return the nozzle to the hook 6S and boot 67. He would haveto drape it on the pump housing, throw it on the ground or otherwisedispose it in an unnatural manner which would be obvious to anyattendant. The same problem exists with respect to all existingdispensers of any kind.

FORM-WITHOUT APPROVAL

1. A system for dispensing a quantity of liquid having a predeterminedtotal value, consisting of a predetermined number of small monetaryunits of value, in response to The collection of a valid bill of equaltotal value, said system comprising: a. a bill acceptor which includesmeans to receive a deposited bill, means to determine its validity andvalue, means to collect a valid bill of proper value and means tothereupon produce a first signal, b. a dispensing apparatus having amanually operable nozzle valve, means for supplying a flow of liquid tosaid valve, said latter means being actuable between flow and stop flowconditions, c. said dispensing apparatus also having means for measuringthe amount of liquid dispensed, a resettable value register, computingmeans connected to be driven by said measuring means and connected todrive register in accordance with the value of the liquid dispensed andmeans for resetting said register to zero, d. first control means havingnormal and first conditions, means operable after the resetting of saidregister for establishing said first control means in said firstcondition, and manually operable means for restoring said first controlmeans to said normal condition, e. second control means having normaland first conditions, and means for establishing said second controlmeans in said first condition in response to said first signal, f. meansresponsive to said first and second control means in said normal andfirst conditions, respectively, to permit operation of said registerresetting means, g. means responsive to said first and second controlmeans in said first conditions for actuating said flow supplying meansto said flow condition, h. means operable in time with said valueregister to produce a second signal upon the complete delivery of theamount of liquid represented by each unit of value, i. means fortransmitting said second signal, including transmission timing meansmounted for movement between initial and signal transmitting conditions,first driving means connected to be driven by said register andconnected to drive said timing means so as to reach said signaltransmitting condition after the beginning of, but before the completionof the delivery of the last unit of said total value, and j. signalresponsive means having normal and activated conditions, and connectedto be activated in response to said transmitted second signal, meansresponsive to the activation of said signal responsive means, forrestoring said second control means to said normal condition, and meansfor thereupon restoring said flow supplying means to said stop flowcondition.
 2. The structure defined by claim 1 which includes a digitalcounter and means connecting said counter with said bill acceptor so asto advance said counter by one digit in response to the collection of abill.
 2. said motor will actuate said transmit switch upon return ofsaid timing means to initial condition to transmit the substitute signalto activate said second signal responsive means.
 2. The second closureof said credit switch will energize said coil to close said stop controlswitch so that the next subsequent closure of said transmit switch willbe effective to transmit the next second signal to activate said signalresponsive means.
 3. The system of claim 1 wherein the means forproducing said first signal includes a normally open switch which isclosed momentarily by said acceptor when a bill is accepted and avisible signal is connected with said switch so as to be energizedmomentarily each time said switch is closed.
 4. The structure defined byclaim 1 which includes means responsive to the activated signalresponsive means for moving said transmission timing means to saidinitial condition, to interrupt the transmission of said second signal.5. The structure defined by claim 4 wherein said first control meansremains in said first condition and wherein said means for establishingsaid second control means in said first condition includes meansresponsive to said first signal for placing said second control means insaid first condition and means, responsive to said second control meansin said first position and said second signal responsive means in saidnormal condition, for holding said second control means in said firstcondition, whereby the occurrence of another first signal subsequent tothe interruption of said second signal will reestablish said secondcontrol means in said first condition and said flow supplying means insaid flow condition without resetting said register.
 6. The strUcturedefined by claim 1 which includes means responsive to said first signalfor preventing the collection of another bill by said bill acceptor. 7.The structure defined by claim 6 which includes means responsive to saidsecond control means in said normal condition for disabling said billcollection preventing means.
 8. The structure defined by claim 1 whichincludes third control means having normal and first conditions, keyoperable means for establishing said third control means in said firstcondition including releasable means for holding same in said firstcondition independently of said key operable means, and means responsiveto said first control means in said normal condition and said second andthird control means in said first conditions, to condition said registerresetting means for operation.
 9. The structure defined by claim 8wherein said manually operable means is mounted for movement between onand off positions, and which includes means operable thereby as it movesto said on position, to cause said conditioned resetting means to resetsaid register and establish said first control means in said firstcondition.
 10. The structure defined by claim 9, which includes meansresponsive to said first and second control means in said firstconditions for releasing said third control holding means and means forthereupon restoring said third control means to said normal condition.11. The structure defined by claim 1 wherein said flow supplying meansincludes first and second valve means connected in parallel to supplyliquid to said nozzle valve at relatively large and small rates of flowrespectively, and wherein said flow supplying means includes stop means,operable from a normal to a first condition to close said first valve,and wherein said timing means includes means for operating said stopmeans to said first condition as said timing means nears saidtransmitting condition.
 12. The structure defined by claim 11 whichincludes means responsive to said transmitted signal and to said secondcontrol means in its normal condition, for restoring said timing andstop operating means to their initial and normal conditionsrespectively.
 13. The structure defined by claim 11 wherein saidmanually operable means is movable between on and off positions, andwhich includes selector means selectively settable to predetermining andnormal conditions, said selector means, in said normal condition,including means for disabling said bill acceptor and said second signalproducing means, and for rendering said stop means ineffective to closesaid first valve, a. means responsive to said first control means andsaid selector means in said normal conditions and said manually operablemeans in the on position for resetting said register, b. meansresponsive to said first control means in said first condition and saidselector means in said normal condition, for actuating said flow supplymeans to flow condition, and c. means responsive to said manuallyoperable means in its off position for moving said first control meansto normal condition to return said flow supplying means to said stopflow condition.
 14. The structure defined by claim 1 in which saidsignal responsive means includes a first actuator having normal andactivated conditions, means connecting it to be activated by saidtransmitted second signal, and wherein siad means for establishing saidsecond control means in said first condition includes a normally closedfirst switch adapted to be opened by said first actuator when activated,and wherein said timing means comprises a switch control element mountedfor movement therewith, a normally open second switch disposed so as tobe closed by said element to establish said transmitting condition, a.means connecting said second switch between said second signal producingmeans and said first actuator so as to open said first switch upontransmission of said second signal, and means for returning said secondcontrol means to normal condition upon the opening of said first switch.15. The structure defined by claim 14 which includes means forrelatively adjusting said second switch and said control switch element,so as to adjust the time of occurrence of said signal transmittingcondition.
 16. The structure defined by claim 14 wherein said means forproducing said second signal includes a normally open third switch,means for connecting it in series with said second switch, an actuatingelement for said third switch, means mounting said actuating element formovement in a predetermined path to a first point therein at which itcloses said third switch and thereafter to a second point therein atwhich releases said switch to reopen, means for driving said actuatingelement in time with said value register so as to close said thirdswitch at the completion of delivery of each small monetary unit ofvalue and means for adjusting said element along said path, relative tosaid drive means, so as to correlate said switch closure with thecompletion of said delivery.
 17. The structure defined by claim 1 whichincludes selector means selectively settable to predetermining andnormal operating conditions, said manually operable means being movablebetween on and off positions, said selector means, in its normalcondition having means for disabling said bill acceptor and forrendering said second signal producing means ineffective, a. meansresponsive to said first control means and said selector means in saidnormal conditions, and said manually operable means in its on position,for operating said register resetting means to reset said register, b.means responsive to said first control means in its first condition andsaid selector means in said normal condition, for actuating said flowsupplying means to the flow condition, and c. means responsive to themovement of said manually operable means to its off position forreturning said first control means to normal condition to restore saidflow supplying means to stop flow condition.
 18. The structure definedby claim 17 which includes means operable by said register resettingmeans for resetting said second signal producing means to its signalproducing condition.
 19. The structure defined by claim 17 whichincludes means responsive to said first control means in said normalcondition for applying a third signal to said signal transmitting means,second driving means connected to drive said transmission timing meansindependently of said value register, a. first actuating means,responsive to said second control means in said normal condition andsaid activated signal responsive means, for actuating said seconddriving means to move said timing means to its initial condition, tointerrupt signal transmission, b. second actuating means, responsive tosaid first control means and said signal responsive means in said normalconditions, for actuating said second driving means, to move said timingmeans to said signal transmitting condition, whereby said second drivingmeans is actuable by said first and second actuating means to restoresaid timing means to said initial condition from any condition ofdisplacement from said initial condition.
 20. The structure defined byclaim 19 wherein said second actuating means includes a device actuablebetween first and second conditions in which it respectively permits andprevents operation of said second actuating means to actuate said seconddriving means, a. means responsive to said first control means in saidfirst condition and said selector means in said normal condition formoving said device to said first condition, means responsive to saiddevice in said first condition and said signal responsive means in saidnormal condition, for holding said device in said first condition, b.means responsive to said activated signal responsive means for disablingsaid holding means, and means operable thereupon for returning saiddevice to said second condition.
 21. The structure defined by claim 1which includes second driving means connected to move said transmissiontiming means independently of, but in the same direction said firstdriving means, first actuating means, including means responsive to saidsecond control means in said normal condition and said signal responsivemeans in said activated condition, for actuating said second drivingmeans, and means for stopping said second driving means with saidtransmitting means in said initial condition.
 22. The structure definedby claim 21 wherein said second driving means includes an electricmotor, said first actuating means includes a normally open switch whichis adapted to be closed by said signal responsive means in saidactivated condition, and said stopping means includes said transmissiontiming means in said initial condition.
 23. The structure defined byclaim 21 wherein said manually operable means includes an element whichis movable between on and off positions and causes said first controlmeans to occupy said normal condition upon movement of said element toits off position, means responsive to said first control means in saidnormal condition for applying a third signal to said signal transmittingmeans, second actuating means, including said first control means andsaid signal responsive means in said normal conditions, for actuatingsaid second driving means to drive said transmission timing means tosaid signal transmitting condition, to cause said third signal toactivate said signal responsive means, and means responsive to suchactivation to disconnect said second actuating means from, and connectsaid first actuating means to said second driving means, to restore saidtransmission timing means to said initial condition.
 24. The structuredefined by claim 23 wherein said second actuating means includesadditional means, having normal and activated conditions, for renderingsaid second actuating means ineffective and effective respectively,means responsive to said first control means in said first condition foractivating said additional means, means responsive to said signalresponsive means, in said normal condition, and said activatedadditional means, for holding said additional means activated, wherebysaid second actuating means is rendered effective to actuate said seconddriving means upon movement of said first control means to said normalcondition with said transmission timing means in a condition other thansaid transmitting condition.
 25. The structure defined by claim 24 whichincludes a third control means having normal and first conditions, keyoperable means for establishing said third control means in said firstcondition, means for releasably holding it in said first condition, saidestablishing and holding means including a normally closed switchcontrolled by said additional means and adapted to be opened therebyupon activation thereof, said third control means in said firstcondition, with said first and second control means in their normal andfirst conditions respectively being connected to condition saidresetting means to reset said register, and means responsive to saidfirst control means, in said first condition for activating saidadditional means to open said normally closed switch to restore saidthird control means to said normal condition.
 26. The system of claim 1which includes a delivery relay having normal and 1st states, meansresponsive to said first control means in its first condition, forestablishing said delivery relay in 1st state, a second relay havingnormal and 1st states, means, including said second control means in itsfirst condition and said delivery relay in its 1st state to establishsaid second relay in its 1st state and means responsive to said secondrelay in its 1st state and said signal responsive means in its normalcondition for holding said second relay in its 1st state.
 27. The systemof claim 26 which includes electrical means for starting and stoppingsaid bill acceptor comprisIng a normally closed switch and meansresponsive to said second relay in its 1st state for opening saidswitch.
 28. The system of claim 26 wherein said means to permit theoperation of said register resetting means includes an electric motorand circuitry for operating said motor, which includes a normally closedswitch and means responsive to the establishing of said second relay inits 1st state for opening said switch.
 29. The system of claim 26wherein said first and second control means are in their firstconditions and which includes a. a normally open power supply switchwhich is held closed by said second control means in its firstcondition, b. said delivery relay having a normally closed switch whichis open when said relay occupies its 1st state; said second relayincluding a normally open switch which is closed by said relay in itsfirst state; said signal responsive means including a normally closedswitch which is opened upon activation of said means; a reset relayhaving normal and 1st states and having first and second normally openswitches which are closed by the relay in its first state, c. meansconnecting said power supply switch with the delivery relay switch andthrough the second relay switch, the signal responsive means switch andsaid reset relay so as to establish said reset relay in its first stateto close its normally open switches, a reset motor connected to thetiming means, d. means connecting the first of said reset relay switcheswith a supply of power and with said reset motor to cause said motor torestore said timing means to its initial condition when said manualmeans is operated to restore said first control means to its normalcondition while said second control means occupies its first condition.30. The system of claim 29 which includes means for supplying power tosaid first reset relay switch from the switch of said signal responsivemeans so that the supply will be interrupted when said means isactivated.
 31. The system of claim 29 wherein the second switch of saidreset relay is connected to one side of said transmit switch and to saidsignal responsive means, and wherein said delivery relay includes anormally closed power switch, means connecting said power switch to theother side of said transmit switch so as to transmit a pulse to saidpulse responsive means when said timing means is restored to its initialcondition by said reset motor, thereby activating said pulse responsivemeans to normalize said system.
 32. The system of claim 31 whichincludes a multipole selector switch means which is manually settable toautomatic and to normal operation positions, said switch means in itsautomatic setting serving to a. transmit power to said second signalproducing means and b. permit energization of said bill acceptor, andwherein said means in its normal setting serves to c. isolate saidsecond signal producing means and supply power directly to said registerresetting means and to the normally open and the corresponding normallyclosed contacts of said delivery relay, independently of said secondcontrol means; d. prevent energization of said bill acceptor and e.positively complete the ground circuit leg of the register resettingmeans so as to render said means responsive solely to said manuallyoperable means, and wherein said establishment of the first controlmeans in its first condition, in response to the resetting of theregisters, energizes said delivery relay to establish said second relayin its 1st state and wherein the restoration of first control means toits normal condition restores said dispensing relay to its normal stateto cause said timing means to be reset to its initial condition at theend of each normal operation of said dispensing apparatus.
 33. Thesystem of claim 1 which includes credit posting means in addition tothat provided by said second control means in its first condition, saidadditional posting means comprising a. first and second devices eachhaving first and second states, means responsive to said second controlmeans in its first condition for establishing said first device in itssecond state, means established by said first device in its second stateto divert another first signal to said second device to establish it inits second state to post an additional credit.
 34. The system of claim33 which includes means responsive to said first control means in itsfirst condition, for preventing the establishment of said second devicein its second state.
 35. The system of claim 33 which includes meansresponsive to said second device, in its second state, to render thetransmission of said first transmitted second signal ineffective toactivate said signal responsive means to interrupt delivery.
 36. Thesystem of claim 35 which includes means operable by said transmissiontiming means for restoring said second device to its first state, andwhich includes additional means operable by said timing means afterpassage thereof through its transmitting condition, for conditioningsaid signal transmitting means to activate said signal responsive meansupon the next subsequent movement of said timing means to itstransmitting condition.
 37. The system of claim 36 which includes thirdand fourth devices, each having first and second states, meansresponsive to said second device in its second state for establishingsaid third device in its second state, a. means established by saidthird device in said state for diverting a third first signal to saidfourth device to establish it in its second state, b. means responsiveto said fourth device in its second state for preventing restoration ofsaid second device to its first state until after the first passage ofsaid timing means through its transmitting condition, c. said additionalmeans being operable after the second passage of said timing meansthrough its signal transmitting condition, to condition said signaltransmitting means to activate said signal responsive means upon thethird movement of said timing means to its transmitting condition. 38.The system of claim 33 which includes third and fourth devices, eachhaving first and second states, and which includes means responsive tosaid second device in its second state, for establishing said thirddevice in its second state and a. means established by said third devicein its second state for diverting a third first signal to said fourthdevice to establish it in its second state, to post a further credit.39. The system of claim 38 which includes means responsive to saidfourth device in its second state for disabling said bill acceptor. 40.The system of claim 38 which includes means responsive to said firstcontrol means in its first condition for preventing the establishment ofsaid fourth device in its second state.
 41. The system of claim 38wherein said first and third devices include means for delaying theestablishment thereof in their respective second states.
 42. The systemof claim 33 wherein said means for transmitting said second signalincludes a normally open transmit switch connected in series with anormally open stop control switch and wherein said timing means includesmeans for closing said transmit switch when said timing means moves toits transmitting condition and for opening it when it passes saidcondition, and wherein the means for closing said stop control switchincludes: a. a coil connected in a circuit which comprises a normallyclosed switch which is opened by said second device in its second stateand a normally open credit switch which is disposed for closure by saidtiming means subsequent to the reopening of said transmit switch and toreopen as said timing means continues in motion, b. means for holdingsaid second device in its second state, said means comprising a normallyopen switch which is closed by said second device in its second stateand which is in series with a normally cLosed first hold switch, saidhold switch being disposed so as to be opened by said timing means aftersaid credit switch is reopened and said second device restored to itsfirst state, whereby:
 43. The system of claim 42 wherein said timingmeans includes rotary cam means which rotate one revolution as saidtiming means move from initial to signal transmitting condition, saidcam means and transmit switch being disposed so that said switch isclosed in the initial and transmitting conditions of said timing meansand is opened as the first event of a revolution, means for disposingsaid credit switch to be closed and opened by said cam means after saidtransmit switch is opened, means for disposing said first hold switch tobe opened and closed by said cam means, after said credit switch hasbeen opened, to restore said second device to its first state.
 44. Thesystem of claim 42 wherein said flow supplying means includes a normallyclosed main valve and a slow flow valve connected to bypass said mainvalve, and wherein the means for actuating said flow supplying meansincludes motor operated means for opening and closing said main valve assaid motor is energized and deenergized respectively, a. means forenergizing said motor including said first and second means in theirfirst conditions and a normally closed first switch connected so as tosupply said motor, b. a normally closed second switch connected inparallel with said first switch, means responsive to the energization ofthe coil for closing said stop control switch and for opening saidsecond switch, c. means operable by said timing means for opening saidfirst switch after said second switch is opened and before said timingmeans reached its transmitting condition, so as to deenergize said motorand close said main valve prior to the subsequent closure of saidtransmit switch.
 45. The system of claim 42 which includes a deliveryrelay having normal and first states, means responsive to said firstcontrol means in its first condition for establishing said relay in itsfirst state, a second relay having normal and first states, meansincluding said second control means in its first condition and saiddelivery relay in its first state to establish said second relay in itsfirst state and means responsive to said second relay in its first stateand said signal responsive means in its normal condition for holdingsaid second relay in its first state, a. means for resetting said timingmeans to its initial condition, including a reset motor connected todrive said timing means, a reset relay having normal and first statesand having first and second normally open switches and a third normallyclosed switch, said means for holding said second device in its secondstate including said third switch in series with the hold switchthereof, b. energizing means for said reset relay including a powerswitch which is closed by said second control means in its firstcondition, a normally closed switch of said delivery relay, a normallyopen switch of said second relay and a normally closed switch of saidsignal responsive means, c. means connecting said reset relay firstswitch to said energizing means and said reset motor to energize themotor when said first switch is closed, d. means for supplying asubstitute second signal to said signal responsive means comprising anormally closed power switch of said delivery relay, said transmitswitch And said reset relay second switch whereby a. upon restoration ofsaid first control means to normal condition while said second controlmeans occupy said first condition, said reset relay will be energized toopen said second device to restore it to its first state, and toenergize said reset motor,
 46. The system of claim 45 which includesthird and fourth devices each having first and second states, whereinsaid second device in its second state is connected to establish saidthird device in its second state for diverting a third first signal toestablish said fourth device in its second state, said fourth deviceincluding a normally open switch, means connecting said switch in serieswith a source of power and through a normally closed second hold switchand said normally closed third switch of the reset relay so as to holdsaid fourth device in its second state, said third switch serving toreturn said fourth device to its first state upon energization of saidreset relay.
 47. The system of claim 42 which includes third and fourthdevices each having first and second states, means responsive to saidsecond device in its second state for establishing said third device inits second state, means established thereby for diverting a third firstsignal to said fourth device to establish it in its second state to posta third credit, said fourth device including a. a normally closed switchconnected in series with said coil and the normally closed switch ofsaid second device, a normally open auxiliary switch connected inparallel with said normally closed first hold switch, and a normallyopen switch in series with a normally closed second hold switch, forholding said fourth device in its second state, said second hold switchbeing disposed for operation by said timing means so as to be openedthereby after the first hold switch is reclosed upon continued operationof said timing means,
 48. The system of claim 47 wherein said fourthdevice includes a normally closed switch, said bill acceptor havingelectric driving means and said switch connected therewith so as todisable said drive means when said fourth device is in its second state.49. The system of claim 47 which includes means responsive to theenergization of the coil of said stop control switch and to said signalresponsive means in its normal condition, for maintaining said coilenergized.
 50. The system of claim 47 wherein said timing means includesrotary cam means which rotate one revolution as said timing means movefrom initial to signal transmitting condition, said cam means andtransmit switch being disposed so that said switch is closed in theinitial and transmitting conditions of said timing means and is openedas the first event of a revolution, means for disposing said creditswitch to be closed and opened by said cam means after said transmitswitch is opened, means for disposing said first hold switch to beopened and closed by said cam means after said credit switch has beenopened and means for disposing said second hold switch so as to beopened by said cam means after said first hold switch has been reclosedand before said transmit switch is reclosed.
 51. The system of claim 47which includes a visible signal for each of said devices and means forenergizing the signal of each device as said device is established inits second state.
 52. The system of claim 51 which includes a secondvisible signal for said firsT device and means for energizing saidsignal when said second control means is in its first condition, toindicate that said first device should be in its second state.